Have some forum members chipped their 3.5 V6 Pajeros? I would love some feedback regarding performance, consumption and if you would recommend it or not.
Yes, I had a 2001 3.5 V6 chipped by CRD in Jhb. They also fit a free flow exhaust and low resistance air filter.
For me the engine was much more free revving and definately much lighter on fuel. But I didn't do it for economical reasons - I don't really think the improved consumption will easily make up for the initial upgrade cost. Torque throughout the rev range increased significantly, but especially below 3000 RPM - which is where you need it most.
For me the engine was much more free revving and definately much lighter on fuel. But I didn't do it for economical reasons - I don't really think the improved consumption will easily make up for the initial upgrade cost. Torque throughout the rev range increased significantly, but especially below 3000 RPM - which is where you need it most.
I have been toying with the idea of obtainig a Unichip and istalling it myself as I am a bit full of poefies when it come to people touching my wiring. I have seen too many profesional aftermarket installations of things like chips, alarms etc where the installers hack the cars loom apart and dont even propely solder or insulate the joints with something like heatshrink.
But I am not to keen to scrath with low restriction aircleaners as they also provide low filtration.
WRT branches I am also scared as it is expensive and if the guys don't do it properly you may end up worse off, and that combined with other possible issues like melting wires and stuff from the radiated heat of the branches I prefer OE manifolds. The only proper way to get the heat issue sorted propely is to have the branches ceremic coated but that will cost you 1 arm two tows and seven fingers.
I think I have mentioned it here before but I can't keep the idea out of the back of my mind to fit a Dicktator ECU in paralel to the existing ECU and let the dicktator take over the fueling and timing from the existing ECU. You should get the same results as a Unichip but you can now measure the Manifold Absolute pressure bu using the Dicktator's build in MAP sensor and you can ignore the Airflow meter which I believe is the culprit why my system is always running so rich.
I will just have to find time somewhere to strip the Pajero and check out the different peripherals to connect to. I am not sure I remember seeying the crank sensor when I worked on her before but cant recall seeying a CAM angle sensor. I will also have to find out if the crank pick up is magnetic or hall.
While on the topic of EMS, the user manuals I have for the 6G74 is for the GDI engines but my 6G74 uses a normal common rail port injection system, does anyone have a write-up on the management system for this engine?
But I am not to keen to scrath with low restriction aircleaners as they also provide low filtration.
WRT branches I am also scared as it is expensive and if the guys don't do it properly you may end up worse off, and that combined with other possible issues like melting wires and stuff from the radiated heat of the branches I prefer OE manifolds. The only proper way to get the heat issue sorted propely is to have the branches ceremic coated but that will cost you 1 arm two tows and seven fingers.
I think I have mentioned it here before but I can't keep the idea out of the back of my mind to fit a Dicktator ECU in paralel to the existing ECU and let the dicktator take over the fueling and timing from the existing ECU. You should get the same results as a Unichip but you can now measure the Manifold Absolute pressure bu using the Dicktator's build in MAP sensor and you can ignore the Airflow meter which I believe is the culprit why my system is always running so rich.
I will just have to find time somewhere to strip the Pajero and check out the different peripherals to connect to. I am not sure I remember seeying the crank sensor when I worked on her before but cant recall seeying a CAM angle sensor. I will also have to find out if the crank pick up is magnetic or hall.
While on the topic of EMS, the user manuals I have for the 6G74 is for the GDI engines but my 6G74 uses a normal common rail port injection system, does anyone have a write-up on the management system for this engine?
benhur, I agree. The air intake box modification SAC plans to do, is with the original air filter intact, they will not replace it with a low filtration unit - I asked about this specifically. Also, the branches don't provide that much of a power increase on the 3.5 V6 and so does not really make a difference.benhur wrote: ...But I am not to keen to scrath with low restriction aircleaners as they also provide low filtration...
.WRT branches I am also scared as it is expensive and if the guys don't do it properly you may end up worse off, and that combined with other possible issues like melting wires and stuff from the radiated heat of the branches I prefer OE manifolds. The only proper way to get the heat issue sorted propely is to have the branches ceremic coated but that will cost you 1 arm two tows and seven fingers.
My Pajero will be going to SAC this Friday for the chip, so I am eager to see what improvements it will bring.
See if you can get it measured on a dyno somewhere else independantly before and after the modification, as I do not allways trust the SAC reports, a friends took his vehicle there 3 times after chipping and everytime they showed 10% improvement so when he asked the guys where the total 30% came from they answered "uhm....uhm..."
WRT the aircleaner keep an origional one in your vehicle and swap when you go offroad, even the OE units let some very fine dust through but with low restriction units the holes as bigger so larger particles goes into your engine.
Personally I will never change my OE filter. I have seen many tests on the net where guys on different brand vehicles tested filter systems, OE dry paper filters vs Aftermarket low restiction filters and even oil filters and most of the times the filter they inserted upstream in the system was the cleanest with the OE dry filter after a specified distance of on road driving.
Offroad it will even be worse..
WRT the aircleaner keep an origional one in your vehicle and swap when you go offroad, even the OE units let some very fine dust through but with low restriction units the holes as bigger so larger particles goes into your engine.
Personally I will never change my OE filter. I have seen many tests on the net where guys on different brand vehicles tested filter systems, OE dry paper filters vs Aftermarket low restiction filters and even oil filters and most of the times the filter they inserted upstream in the system was the cleanest with the OE dry filter after a specified distance of on road driving.
Offroad it will even be worse..
I will try to have it tested before doing the chip, but I reckon the real evidence will be the fuel consumption and driveability afterwards.
I phoned my Neighbour Schalk from Dyno logic and he said he will charge R 600 for two full runs, plotting the complete engine curve with air fuel ratio's before and after the chip.
Give him a call if you are interested, 082 880 6116.
He did the same for another customer a few weeks back and when the guy was not happy with the results they achieved with his chip he had real prove to take them on.
Give him a call if you are interested, 082 880 6116.
He did the same for another customer a few weeks back and when the guy was not happy with the results they achieved with his chip he had real prove to take them on.
Last edited by benhur on Tue Mar 22, 2011 11:41 pm, edited 2 times in total.
Is this Schalk situated close to the Wonderboom Airport in Pretoria? If so, I have heard good things about him ,he seems to know what he is doing. I might have spoken to him previously over the phone. It's a pitty I am not close by, otherwise I would have used him before chipping the car. Think I will pay him a visit afterwards in any case.benhur wrote:I phoned my Neighbour Schalk from Dyno logic and he said he will charge R 600 for two full runs, plotting the complete engine curve with air fuel ratio's before and after the chip.
Give him a call if you are interested, 082 371 3959.
He did the same for another customer a few weeks back and when the guy was not happy with the results they acheived with his chip he had real prove to take them on.
I took my Pajero 3.5 DOHC to SAC last week as my ECU is packing up. Huge problems with the engine in that it had the power of a 1600 Golf! I had everything tested/checked for faults or problems, nothing. All came to the same result : ECU. SAC installed a Unichip and it is a completely new engine, albeit coming from a very low base though! Maximum torque is achieved at 2500 rpm now, engine is much more responsive. Don't have fuel consumption numbers yet, but I strongly believe it will be lighter on fuel.
Yip its him, he is also actually interested in getting a Pajero himself, I got him bitten by the 4x4 gogga but being a Nissan/SAAB fan he got himself a Safari Stationwagen but he works on Pajero's with faulty ECUs regularly and he has now realised that a Pajero is just in another class. He actually did rally racing with Tredia Turbo's in the past (he owned 2) and he also still owns an old Colt Galant so he is not a stranger to the Mitshu brandmacjohnw wrote:Is this Schalk situated close to the Wonderboom Airport in Pretoria? If so, I have heard good things about him ,he seems to know what he is doing. I might have spoken to him previously over the phone. It's a pitty I am not close by, otherwise I would have used him before chipping the car. Think I will pay him a visit afterwards in any case.benhur wrote:I phoned my Neighbour Schalk from Dyno logic and he said he will charge R 600 for two full runs, plotting the complete engine curve with air fuel ratio's before and after the chip.
Give him a call if you are interested, 082 371 3959.
He did the same for another customer a few weeks back and when the guy was not happy with the results they acheived with his chip he had real prove to take them on.
He recently fitted an aftermarket ECU onto a 3.5 GDI only to do the timing as the stock ECU was not firing all the coils anymore and the owner could not afford a new OE ECU. On another occasion recently he fited an ECU only to take over fueling as that part of the ECU was shot, so he makes the aftermarket ECU piggy ontop of the OE one and both work in conjunction.